They are freeing up ~10,000 houses over the next four years with this legislation. Barcelona built ~15,000 new properties between 2011 and 2020.
The math don't math. It's a drop in the bucket. The entire impact of AirBnB + all housing built in the last decade does not offset the last half decade of population growth.
Housing must be built more quickly than your population is growing to keep prices down, or you must concede that you live in a nice area where people wealthier than you wish to be and that those people are going to gentrify the area and displace locals. It's an unpleasant reality of the world.
EDIT: some good feedback in the responses. thanks! I'm being a bit dramatic by saying it's just a drop in the bucket, this action frees up more housing than was built over the same timespan, and it's possible to have effects on pricing greater than what would be inferred by the raw numbers because economics is tricky. cheers.
Extreme height restrictions combined with extreme regulatory costs is what has lead to this issue.
Show a European politician, especially a local one in charge of urban development, an image from Tokyo and they will recoil in horror.
Here in Europe everything must be flat and look cultural.
https://en.wikipedia.org/wiki/List_of_European_Union_cities_...
As you see, Spain has 12 cities among the top 38 cities in Europe. L'Hospitalet (an urban centre close to Barcelona) is densest than Paris.
You could weigh the density by population (effectively giving you population²/area?! I'm not saying this is a good idea), and you'd get a top10 of Paris, Barcelona, Madrid, Bucharest, Berlin, Athens, Milan, Brussels, Vienna, Naples, which despite the slightly bizarre metric seems a more sensible ranking (Emperador is at the bottom rank), and which, to be fair, also features two Spanish cities.
But again, it's kind of a pointless endeavor, because of the arbitrary nature of the boundaries chosen -- why Paris and not Paris metro? etc. I guess ideally you'd have a function density(person) giving you the population density of any given person and you'd want to look at the distribution of that function, specifically the average per country of that function.